I have a javascript to check the input item in the editor, if there is empty, it would set focus on the editor

I tried to use

 

 

or

 

document.Editor1.focus();

 

both are not success

Dear surrounding,

 

Please try the following code:

function setFocus()
   {
    // get the cute editor instance
    var editor1 = document.getElementById('<%=editor.ClientID%>');
    
    editor1.FocusDocument();
   }

You can refer to JavaScript-API.asp which can be found in download package.